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Commit de57f2ad authored by Guy Levi's avatar Guy Levi Committed by Doug Ledford
Browse files

IB/mlx5: Support 128B CQE compression feature 



In commit 1cbe6fc8 ("IB/mlx5: Add support for CQE compressing") the
concept of CQE compression was introduced and added a support for 64B
CQE size. This change update the code to support 128B CQE size as well.

Signed-off-by: default avatarGuy Levi <guyle@mellanox.com>
Reviewed-by: default avatarMark Bloch <markb@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 0ff8e79c

drivers/infiniband/hw/mlx5/cq.c

+4 −2
Original line number Diff line number Diff line
@@ -804,8 +804,10 @@ static int create_cq_user(struct mlx5_ib_dev *dev, struct ib_udata *udata, 
	*index = to_mucontext(context)->bfregi.sys_pages[0];



	if (ucmd.cqe_comp_en == 1) {

		if (unlikely((*cqe_size != 64) ||

			     !MLX5_CAP_GEN(dev->mdev, cqe_compression))) {

		if (!((*cqe_size == 128 &&

		       MLX5_CAP_GEN(dev->mdev, cqe_compression_128)) ||

		      (*cqe_size == 64  &&

		       MLX5_CAP_GEN(dev->mdev, cqe_compression)))) {

			err = -EOPNOTSUPP;

			mlx5_ib_warn(dev, "CQE compression is not supported for size %d!\n",

				     *cqe_size);

drivers/infiniband/hw/mlx5/main.c

+6 −2
Original line number Diff line number Diff line
@@ -824,8 +824,12 @@ static int mlx5_ib_query_device(struct ib_device *ibdev, 
			sizeof(resp.mlx5_ib_support_multi_pkt_send_wqes);

	}



	if (field_avail(typeof(resp), reserved, uhw->outlen))

		resp.response_length += sizeof(resp.reserved);

	if (field_avail(typeof(resp), flags, uhw->outlen)) {

		resp.response_length += sizeof(resp.flags);

		if (MLX5_CAP_GEN(mdev, cqe_compression_128))

			resp.flags |=

				MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_COMP;

	}



	if (field_avail(typeof(resp), sw_parsing_caps,

			uhw->outlen)) {

include/uapi/rdma/mlx5-abi.h

+6 −1
Original line number Diff line number Diff line
@@ -203,6 +203,11 @@ struct mlx5_ib_striding_rq_caps { 
	__u32 supported_qpts;

};



enum mlx5_ib_query_dev_resp_flags {

	/* Support 128B CQE compression */

	MLX5_IB_QUERY_DEV_RESP_FLAGS_CQE_128B_COMP = 1 << 0,

};



struct mlx5_ib_query_device_resp {

	__u32	comp_mask;

	__u32	response_length;
@@ -211,7 +216,7 @@ struct mlx5_ib_query_device_resp { 
	struct	mlx5_ib_cqe_comp_caps cqe_comp_caps;

	struct	mlx5_packet_pacing_caps packet_pacing_caps;

	__u32	mlx5_ib_support_multi_pkt_send_wqes;

	__u32	reserved;

	__u32	flags; /* Use enum mlx5_ib_query_dev_resp_flags */

	struct mlx5_ib_sw_parsing_caps sw_parsing_caps;

	struct mlx5_ib_striding_rq_caps striding_rq_caps;

};